[NTG-context] Placefigure without numbering

Hi there, how to deactivate numbering for the following (empty) picture? \placefigure[here][fig:demo]{My description under the picture.}{} Thanks, Huseyin P.S.: I know that for multi-line code my email-client seems to format the code with many spaces, how to control that, I am using Mozilla Thunderbird? (I can't see the spaces, but after copying them out of the send email, I see the problem, too)